It is most likely that this parrot was caught when very young, even possibly unfledged, and was totally nurtured by humans.D'vora Ben Shaul, Jerusalem Post

Some also charge the leaders with sheltering unfledged youth from the real world or, as one public education official quoted in the Washington Post put it, "prolonging a cocoon existence."Helen Mondloch, World and I

Origin of unfledged

1595-1605

Unfledged is from obsolete fledge, "capable of flying; feathered," from Middle English flegge, from Old English -flycge.